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Finding the Fourth Proportional to 279,821.40, 419,732.10 and 201,672.60

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Solution

The fourth proportional to 279,821.40, 419,732.10 and 201,672.60 is: 302,508.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,821.40 : 419,732.10 = 201,672.60 : x
  2. Step 2: Convert to fraction form
    279,821.40/419,732.10 = 201,672.60/x
  3. Step 3: Cross multiply
    279,821.40x = 419,732.10 × 201,672.60
  4. Step 4: Simplify right side
    279,821.40x = 84,648,463,910.46
  5. Step 5: Solve for x
    x = 84,648,463,910.46/279,821.40
  6. Step 6: Final answer
    x = 302,508.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.